From 3a1d3d35fe4833832fd3b256ba0b29a1596dc78b Mon Sep 17 00:00:00 2001
From: Craig Bester <craig.bester@iota.org>
Date: Fri, 16 Jul 2021 12:52:57 +0200
Subject: [PATCH] Update actions to pin Rust nightly version (#318)

Fix attempt for inconsistent Github Actions failures.
---
 .github/workflows/coverage.yml        |  2 +-
 .github/workflows/format.yml          |  2 +-
 .github/workflows/scripts/coverage.sh | 10 ++++++----
 3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index d071ddde75..ef27bcf626 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -25,7 +25,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: nightly
+          toolchain: nightly-2021-07-05
           override: true
           components: llvm-tools-preview
       - uses: actions-rs/install@v0.1
diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index 2d9bd6ba16..9e491a7086 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -26,7 +26,7 @@ jobs:
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: nightly
+          toolchain: nightly-2021-07-05
           override: true
           components: rustfmt
       - name: core fmt check
diff --git a/.github/workflows/scripts/coverage.sh b/.github/workflows/scripts/coverage.sh
index 2671ca17ee..41675dd57c 100755
--- a/.github/workflows/scripts/coverage.sh
+++ b/.github/workflows/scripts/coverage.sh
@@ -5,9 +5,11 @@ set -e
 rm -rf coverage
 mkdir coverage
 
+NIGHTLY="+nightly-2021-07-05"
+
 # Run tests with profiling instrumentation
 echo "Running instrumented unit tests..."
-RUSTFLAGS="-Zinstrument-coverage" LLVM_PROFILE_FILE="identity-%m.profraw" cargo +nightly test --tests --all --all-features
+RUSTFLAGS="-Zinstrument-coverage" LLVM_PROFILE_FILE="identity-%m.profraw" cargo $NIGHTLY test --tests --all --all-features
 
 # Merge all .profraw files into "identity.profdata"
 echo "Merging coverage data..."
@@ -18,7 +20,7 @@ do
   PROFRAW="${PROFRAW} $file"
 done
 
-cargo +nightly profdata -- merge ${PROFRAW} -o identity.profdata
+cargo $NIGHTLY profdata -- merge ${PROFRAW} -o identity.profdata
 
 # List the test binaries
 echo "Locating test binaries..."
@@ -27,7 +29,7 @@ BINARIES=""
 for file in \
   $( \
     RUSTFLAGS="-Zinstrument-coverage" \
-      cargo +nightly test --tests --all --all-features --no-run --message-format=json \
+      cargo $NIGHTLY test --tests --all --all-features --no-run --message-format=json \
         | jq -r "select(.profile.test == true) | .filenames[]" \
         | grep -v dSYM - \
   ); \
@@ -38,7 +40,7 @@ done
 
 # Generate and export the coverage report to lcov format
 echo "Generating lcov file..."
-cargo +nightly cov -- export ${BINARIES} \
+cargo $NIGHTLY cov -- export ${BINARIES} \
   --instr-profile=identity.profdata \
   --ignore-filename-regex="/.cargo|rustc|target|tests|/.rustup" \
   --format=lcov --Xdemangler=rustfilt \